According to the constitution of the United States of America, state government has been authorized to recognize the qualifications for all the universities as well as colleges being located in the state, and has a responsibility for their registration and approvement. Usually the issued certification of the state government can be served as the unique evidence whether the institutions of higher learning would be accepted or not by the public.

Universities and colleges in America are mainly classified into two types, e.g. Public and private. Their educational system is normally differed into two-year or four-year. Two-year educational system is widely adopted by institutions of technology and community colleges.Statistics shows now there are around 3600 universities and colleges in America.

Teaching quality of the American universities is the responsibility towards specialized organizations of assessment and authentication.Certifying organizations accepted by the American Ministry of Education are including the accredited organizations of six major areas and other few dozens of specialized organizations.

Work of all certifying organizations helped the Federal Government in daily management towards those institutions of higher education. CHEA is the responsible organization to recognize qualifications for all American accredited organizations.

If qualifications of the universities or colleges are to be approved by an association of area certifying organization,students’s academic scores(Student’s GPA) of those universities or colleges therefore, could be accepted to each other, and their issued degree or graduation certificates could be easily recognized by the great majority of the public society.